Well, the Hijri date 27 Ramadan 1189 corresponds to the Gregorian date Monday, 20 November 1775. This date lies in the ninth month of the Hijri year 1189 AH, which is Ramadan of 1189 AH. Both this Hijri and Gregorian date occur on the single day that is Monday without any doubt. The Arabic date 1189/09/27 is calculated using the Umm Al-Qura calendar and the sighting of the moon. One thing to remember is that this Arabic date may occur on different Gregorian date depending upon the region and country and obviously the moon.
If you are still not sure about the date then you can use our Arabic date converter.
The following is the conversion of the Gregorian date 20 November 1775 to its equivalent Arabic date.
The following is the conversion of the Arabic date 27 Ramadan 1189 AH to its equivalent Gregorian date.
وَسَبِّحُوهُ بُكْرَةًۭ وَأَصِيلًا
And glorify Him early and late.
Surah Al-Ahzaab(33:42)